Explains vocabulary and abbreviations used in CAN technology
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See bus length.
Entity responsible for the network boot up procedure, control of the node's FSA and the optional configuration of nodes. It also may include node-supervising functions such as node guarding.
In multiple CANopen network systems this number identifies a single CANopen network uniquely. CANopen supports up to 127 networks in hierarchical or non-hierarchical network systems as specified in CiA 302-7.
This is a combined electrical and data specification for a marine data network for communication between marine electronic devices such as depth finders, nautical chart plotters, navigation instruments, engines, tank level sensors, and GPS receivers. The J1939-based application profile has been developed by NMEA (National Marine Electronics Association), a US non-profit organization.
Abbreviation for network management in CAL and CANopen. See network management.
The NMT master device in CAL and CANopen performs the network management by means of transmitting the NMT message. With this message, it controls the state machines of all connected NMT slave devices.
FSA of a CANopen device with NMT master functionality. It covers the states NMT master initial (indicates FSA start), NMT master startup capable device (no or limited NMT master functionality is provided), NMT master inactive (no or limited functionality e.g. scanning for NMT master capable devices is provided), NMT master active (entire supported functionality is active) and NMT master final (indicates FSA end).
The NMT slaves receive the NMT message, which contains commands for the NMT state machine implemented in CAL and CANopen devices.
The NMT slave state machine defined in CAL and CANopen supports different states. The NMT master controls the transition to the states via the highest prior CAN message transmitted.
The CANopen device, which is able to enter the NMT state operational after the NMT state initialization autonomously (self starting).
Assembly, linked to the CAN network. capable of communicating across the network according to the CAN protocols.
Part of the error control mechanisms used in CAN open and CAL to detect bus-off or disconnected devices. The NMT master sends a remote frame to the NMT slave that is answered by the corresponding error control message. This mechanism is not supported in CAN FD.
Unique identifier for a device required by different CAN-based higher-layer protocols in order to assign CAN identifiers to this device, e.g. in CANopen or DeviceNet. Using the pre-defined connection sets of CANopen or DeviceNet, the node-IO is part of the CAN identifier.
The nominal bit rate is the number of bits per second transmitted in the absence of resynchronization by an ideal transmitter. It is used in Classical CAN frames and in the arbitration phase of the CAN FD frames.
The nominal bit time can be thought of as being divided into separate nonoverlapping time segments. It is used in Classical CAN frames and in the arbitration phase of the CAN FD frames.
Method of representing binary signals. Within one and the same bit time, the signal level does not change.
See segmented SDO.
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